Anchor



M. (L FURSTENAU.

ANCHOR.

APPLICATION FILED AUG. 13. 1920.

1 ,357,552, Patented Nov. 2, 1920.

2 SHEETSSHEET 1.

INVEN'IOR.

WITNESSES: I W [farm Qfl'u' I BY 7."

A T'I'ORNE Y.

MARTIN C. FURSTENAU, OF PHILADELPHIA, PENNSYLVANIA.

ANCHOR.

Specification of Letters Patent.

Patented Nov. 2, 1920.

Application filed. August 13, 1920. Serial No. 403,219.

To all whom it may concern:

Be it known that I, MARTIN C. FUR- s'rnnnu, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvanla, have invented certain new and useful Improvements in Anchors, of which the following is a specification.

One object of my invention is to prov de improved means for pivotally connecting and locking the shank within the head of an anchor.

Another object is to so construct and apply my invention that anchors can be quickly and cheaply manufactured and at the same time the anchors so made will be more durable in their parts of connection between the shank and the head.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in which- Figure 1 is a front view of an anchor made in accordance with my invention,

Fig. 2 is a side view of Fig. 1, r

Fig. 3 is a bottom view of the anchor shown in Figs. 1 and 2,

Fig. 4 is a fragmentary section taken on the line 1% of Fig. l; the shank being shown in outside view, and

Fig. 5 is a section taken on the line 5-5 of Fig. 1.

Ester-ring to the drawings, 6 represents the shank of an anchor having the usual shackle 7 pivotally connected to its upper end. An anchor head 8 has laterally ex tending flukes 9 and the central portion of the head is made hollow to provide a socket 10. The upper portion of the head has an upwardly flared opening 11. The bottom portion of the shank has a T-head which includes laterally extending trunnions 12 which are adapted to fit within the socket; the distance between the opposite end portion of the trunnions being greater than the width of the opening 11 so that it is impossible for the trunnions of the shank to move upwardly and outwardly through the opening 11 and requires that the shank be inserted upwardly through the bottom of the head in order to position the trunnions within the socket.

The bottom portion 13 of the head has an inwardly undercut groove 14:. This groove extends entirely across the bottom portion of the head from side to side as clearly moved upwardly into the socket to pivotally assemble the shank and the head.

I provide a lock block 17 which is adapted to snugly fit within the groove 14:; the lock block being tapered in the direction of its length and wedge shape in cross section.

After the trunnions of the shank have been positioned within the socket 11 the lock block 17 is inserted from the side 15 of the head into the groove 14; and forms a closure for the bottom of the socket and also serves as abutting means for the lower end of the shank. The lock block snugly fits within the groove 14: and after being inserted the lock block may be quickly electro-welded to the head so as to prevent the block from moving sidewise out of the groove. The wedge shape character of the block and groove prevents the block from moving downwardly out of the groove and in this manner a quick, cheap and durable locking means for the shank trunnions within the socket is provided. The block 17 is preferably provioed with a hole 18 of less width than the distance between the opposite ends of the trunnions and this hole permits any material which enters the socket through the opening 11 to again drain out of the socket so as to permit tree pivotal movement between the head and the shank.

in carrying out my above described invention the comparatively large character of the block and groove permits a core to be made in the manufacture or casting of the parts which will be comparatively large and strong so as to hold up in the casting oper ation and I am thus enabled to cast the parts so as to fit as above described and so that they do not require any machining or detail fin ishing. I can also cast the block in a core mold so that the taper and wedge cross sec tion'will be accurate in the finished casting and thereby correspond with and snugly lit the groove 14.

cesses and very often become loose and require considerable time in the manufacture thereof.

The comparatively large surface presented' by my improved lock block serves as efficient abutting means for the trunnions portion of the shank and the structure is such that the lock block will not accidentally work loose.

While I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent is 1. An anchor including a head providing a socket for the trunnions of a shank, said head having a tapering groove; and a lock block adapted to be slid within said tapering groove so as to fit therein and form a closure to retain the trunnions of the shank within said socket; substantially as described.

2. An anchor including a head providing a socket in which the trunnions of a shank are adapted to be positioned, the bottom of said head having a groove tapering from one side toward the other and being undercut in the direction of-its width; and a lock block adapted to be slid into said groove so as to fit therein and form a closure for said socket to retain the trunnions of the shank therein; substantially as described.

3. An anchor including a head providing a socket in which the trunnions of a shank are adapted to be positioned, the bottom of said head having a groove tapering from one side toward the other and being undercut in the direction of its width; and a lock block adapted to be slid into said groove so as to fit therein and form a closure for said socket to retain the trunnions of the shank therein, said block having a drain hole there in communicating with the interior of said socket; substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MARTIN C. FURSTENAU lVitnesses ELIZABETH GARBE, CHAS. E. POTTS. 

